Update README.md

Author: deissh

README.md

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 # Simple Lambda Service
 
+[![Codacy Badge](https://api.codacy.com/project/badge/Grade/c4d781bc8ecd430b95385f8a4bc0fec5)](https://www.codacy.com/app/Deissh/lambda?utm_source=github.com&utm_medium=referral&utm_content=deissh/lambda&utm_campaign=Badge_Grade)
+
 [![GitHub issues](https://img.shields.io/github/issues/deissh/lambda.svg)](https://github.com/deissh/lambda/issues)
 [![GitHub stars](https://img.shields.io/github/stars/deissh/lambda.svg)](https://github.com/deissh/lambda/stargazers)
 [![Twitter](https://img.shields.io/twitter/url/https/github.com/deissh/lambda.svg?style=social)](https://twitter.com/intent/tweet?text=Wow:&url=https%3A%2F%2Fgithub.com%2Fdeissh%2Flambda)